REMOVE

1. Macao (China) -- Maps
2. China -- Maps
3. Pearl River Estuary (China) …
4. Guangdong Sheng (China)
5. Macao (China)

WHAT

1. Macao (China) -- Maps (1)
2. Manuscripts (1)
3. Sea Charts (1)

WHERE

1. Guangdong Sheng (China) (1)
2. Macao (China) (1)
3. Pearl River Estuary (Chin … (1)

WHEN

1. [17--] (1)